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Ceramic foam filter is a kind of effective molten metal filter. It’s three-dimensional connected mesh structure and high porosity has many advantages, for example, large surface area of slags collection, large inner surface area of filtering, small flow resistance, good filtering effect, etc.
| Material | Alumina | Silicon carbide | Zirconia | Magnesia |
| Color | White | Grey black | Yellow | Dark yellow |
| Pore density | 8-60ppi | 8-60ppi | 8-60ppi | 8-60ppi |
| Porosity | 80-90% | 80-90% | 80-90% | 80-90% |
| Refractoriness | ＜1100℃ | ＜1500℃ | ＜1700℃ | ＜1000℃ |
| Bending strength | ＞0.6Mpa | ＞0.8Mpa | ＞1.0Mpa | ＞0.6Mpa |
| Compression strength | ＞0.8Mpa | ＞0.9Mpa | ＞1.2Mpa | ＞0.8Mpa |
| Volume-weight | 0.3-0.45g/cm3 | 0.35-0.5g/cm3 | 0.9-1.5g/cm3 | 0.3-0.5g/cm3 |
| Thermal shock resistance | 6 times/1100℃ | 6 times/1100℃ | 6 times/1100℃ | 6 times/1100℃ |
| Applications | Aluminium, aluminium alloys and other non-ferrous alloys | Ductile cast iron, malleable cast iron, gray iron and other cast iron | High melting point metal alloys like steel, alloy steel, stainless steel etc | Magnesium and high-active alloy |
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